body {
  margin: 0;
  padding: 0;
}
.yiwu {
  margin-bottom: 190px;
}
#nav {
  display: inline-flex;
  color: white;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
  margin: 100px 255px;
}

.zdy-nav {
  background-color: #da3481;
  width: 120px;
  height: 40px;
  margin: 0 3px;
}

.zdy-nav-a {
  width: 1200px;
  height: 4px;
  background-color: #da3481;
  text-align: center;
  margin-top: -100px;
}

#zdy-banner {
  text-align: center;
  margin-top: 40px;
}

#zdy-banner > img {
  width: 1140px;
}

#banner-box {
  width: 100%;
  position: relative;
  overflow: hidden;
  height: 500px;
}
#zdy-big-banner {
  width: 1920px;
  position: absolute;
  left: 50%;
  margin-left: -800px;
}
